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Discussion Starter · #1 ·
In the 2004 UROC rules, it states:

"The use of Ethylene glycol is not permitted"

So are propylene glycol based products acceptable?

What are other alternatives besides running 100% water?
 

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Not sure of the base, but try the Sierra Brand of coolant.

Rich

The reason behind this rule is BLM has requested this in a number of their permits for our competitions
 

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Discussion Starter · #4 ·
Big Rich said:
Not sure of the base, but try the Sierra Brand of coolant.
Thanks Rich, that's what I figured, but wanted to make sure.

Sierra (made by Peak) is propylene glycol based, so that's what I will do.
 

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I haven't seen Sierra. Is it OK in Alum. engines? and whats the cost? I can get Hercules Cryo Tech 100 but it's sorta expensive.
 

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I buy Sierra at Pep Boys. It is priced about the same as regular coolant. I have run it for about a year here in Az with no noticable difference from regular coolant. It is safe for Aluminum. We have pets and I would never hear the end of it if one of my wife's cats got into some coolant (again )
 
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